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Kotlin Summary & Certification Exam
Earn your official Kotlin & Android Developer Specialist Certificate
Validate your expertise in Kotlin null safety, immutable variables, data classes, sealed class pattern matching, extension functions, coroutines, and Jetpack Compose.
Key Skills Tested in this Examination
val vs var and compile-time null safety.
Safe calls ?., Elvis operator ?:, and smart casts.
Single-line data classes with copy() and structural equality.
Sealed class hierarchies and exhaustive when expressions.
Extension functions and functional collection pipelines.
Coroutines, suspend functions, and Dispatchers.IO.
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Test Yourself With Exercise
Which statement accurately describes `data class` in Kotlin compared to standard Java POJOs?